Tumbled Stromatolite / 20-35mm AVG - 1 LB. LOT Menu Arrowhead Avg Size Range: (55 millimeters)

Avg Size Range: (55 millimeters)

dumortierite can turn green

Crystal luxury with our Soy Wax Candle Gemstone Set

a mineral usually found in igneous rock and the upper mantle below the Earth's crust

Weight: 92 g

Tumbled Stromatolite / 20-35mm AVG - 1 LB. LOT Menu Arrowhead Avg Size Range: (55 millimeters)Quantity: 1 pound Average size range: 20 to 35 millimeters Stromatolites are layered sedimentary stones formed by photosynthetic bacteria. These bacteria form mineral layers by cementing local stone, sand, and gravel together over long periods of time. These structures can reach over 3 feet tall, and fossilized stromatolites are useful records of Precambrian life in paleontology.